ROO Race Series
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About the race
ROO Race Series is a two-day race weekend held June 11–12, 2027 on private ranchland near Clancy, Montana. The event groups five races across the ranch landscape and centers on a crew-friendly backyard ultra format that returns runners to the same start area each lap.
The weekend program includes multiple trail distances and a signature Backyard Ultra. The Backyard Ultra uses a repeating loop of 4.17 miles that each competitor must complete before the next loop begins; the format continues until one runner remains. The event emphasizes shared camp experience, spectatorship on ranch grounds, and continuous support from crews at the start corral.
Inaugural ROO Ultra results from 2026 are part of the event history: the backyard ultra ran 39 hours, the winning distance recorded was 163.8 miles, the field began with 41 starters and produced 23 ultramarathon finishers, and a $10,000 prize purse was awarded. The ranch setting is described as part of the racing experience and is intended to keep runners, crews, and families together throughout the weekend.
Distances included on the weekend: Visit the organization's website for the most recent information.
- ROO Backyard Ultra: no set distance; 4.17 mile loop each hour until one runner remains.
- 50K: mountain ultramarathon across ranch backcountry.
- 25K: longer trail distance across ranch terrain.
- 10K: shorter trail race on ranch trails.
- Little ROO Mile: one-mile kids race.
